If you watched "Jeopardy!" last night, you saw an IBM supercomputer named Watson cream two human champions — at least until it made a few dumb mistakes late in the round and allowed Brad Rutter to tie things up. But you also saw Watson's "face" — the swirling electronic avatar that Alex Trebek dryly rebuked when it buzzed in with an incorrect answer that Ken Jennings had already made. (Guess we shouldn't fear a robot uprising quite yet.)

If you watched "Jeopardy!" last night, you saw an IBM supercomputer named Watson cream two human champions — at least until it made a few dumb mistakes late in the round and allowed Brad Rutter to tie things up. But you also saw Watson's "face" — the swirling electronic avatar that Alex Trebek dryly rebuked when it buzzed in with an incorrect answer that Ken Jennings had already made. (Guess we shouldn't fear a robot uprising quite yet.)